Pressurized container



Nov. 20, 1962 F. P. GRUENEWALD 3,064,695

PREssuRIzED CONTAINER Filed June 3, 1960 2 Sheets-Sheet 1 INVENTOR F'f/P/Ck E G/QEAIEWHM F. P. GRUENEWALD PRESSURIZED Nov. 2o, 1962 CONTAINER 2 Sheets-Sheet 2 Filed June 3, 1960 United States Patent Oiiice 3,064,696 Patented Nov. 20, A1962 3,954,696 PRESSURZED CONTAINER Frederick P. Gruenewald, 16 Converse St., Newton 58, Mass.

Filed June 3, 196i), Ser. No. 33,689 Claims. (Cl. 141-20) This invention relates to that type of pressurized container which has a single combined charging and dispensing passage or duct through which both the high pressure gas is fed into the container to charge the same and the pressurized contents of the container are dispensed therefrom.

One object of the present invention is to provide a novel two-way valve which controls both the delivery of the high pressure charging gas into the container to charge the latter and also the delivery of the pressurized contents of the container when said contents are to be dispensed.

Another object of the invention is to provide a novel valve which is normally held in its closed position by the pressure within the container, but which will be automatically opened to admit high pressure gas into the container when said gas is delivered into said passage or duct, the

high pressure of the gas serving to open the valve for this purpose.

Another object of the invention is to provide a combined charging and dispensing valve which is simple in construction and inexpensive to manufacture and is also easy to operate.

In the drawings, wherein is illustrated a selected embodiment of the invention,

FIG. l is a sectional view on an enlarged scale showing the upper end of a pressurized container and also showing the combined charging and dispensing valve;

FIG. 2 is an enlarged fragmentary sectional view showing the combined charging and dispensing valve in its closed position;

FIG. 3 is a similar view showing said valve in open position for charging the container;

FIG. 4 is a view showing the said valve in open position for dispensing the contents of the pressurized container;

FIG. 5 is a view similar to FIG. 3 but showing the valve in section; v

FIG. 6 is a view on theline 6 6 of FIG. 4;

FIG. 7 is a view on the line 7-7 of FIG. 4.

In the drawings, 1 indicates a portion of a pressurized container which is provided with a body having an interior chamber 3 and also a cap 4 which is screw threaded to the top of the body 2 as shown at 5 in FIG. 1 and which closes said chamber 3. The joint between the body 2 and the cap 4 is sealed by a sealing ring 4a. The cap 4 is provided with a combined charging and dispensing passage or duct 6, the lower end of which opens into the chamber 3 and the upper end of which communicates with the passage 6a through a combined charging and dispensing tubular arm 7 which is screw threaded into the cap as shown at 9.

The two-way valve which controls both the delivery of the high pressure charging gas into the chamber 3 of the container for charging the latter and also the dispensing of the pressurized contents of the chamber, is indicated generally at 10. This valve is mounted on a valve stem 1l which extends through a valve receiving passage 14 that is located axially of the cap 4. The combined charging and dispensing passage 6 is located at an angle to the valve receiving passage 14 and the two passages merge within the cap 4 near the bottom face 12 thereof as shown at 13. The merged portions of said passages is indicated at 14a. This merged portion of the two passages -forms in effect the lower end of the valve receiving passage 14, as Well as the lower end of the charging and dispensing passage 6.

The valve stem 11 is provided with two circumferential grooves 16 and 17, the groove 16 being located in the passage 14 above the point Where the two passages merge and the other groove 17 -being located in the merged portion 14a of the two passages immediately above the lbottom face 12 of the cap 4.

A sealing ring 13 is mounted in the groove 16 and seals the passage 14 above the point 13 where the two passages merge. The other sealing ring 19, which constitutes the two-way valve for controlling the admission of high pressure gas into the chamber 3 and the dispensing of the pressurized contents of said chamber, is mounted in the groove 17 in such a ymanner -that while it seals the portion 14a of the merged passages from leakage due to internal pressure in the chamber 3, yet it will be automatically opened to admit high pressure gas into said chamber 3'.

when such high pressure gas is `fed into the passage 6a of the combined charging and dispensing arm 7 to charge*V the container.

For this purpose, the valve stern 11 is provided with an extension 15 below the groove 17 which extends through the cap 12 and into the chamber 3 as shown best in FIG. 2. This projecting portion 15 of the valve stem4 is cut away on one side from the bottom of the groove 17 to the end of the tip portion 15 as shown at 21. As a result, while the sealing ring valve 19 is supported on the upper side by the top face of the groove 17, yet the portion 22 of the sealing ring where the tip 15 is cut away has no support on its underside, as best seen in FIG. 5. Consequently, when gas having a pressure suiciently higher than that in the chamber 3 is delivered into the passage 6a of the arm 7 and into the passage 6 in the cap raised to the desired point and the ow of high pressure gas into and through the passages 6a and 6 has termi, nated, then the pressure in the chamber 3 will force the displaced portion 22 of the sealing ring 19 back into its normal operative position shown in FIG. 2, thereby againY sealing the lower end of the portion 14a of the passage. j

With this improved valve therefore, it is not necessary f to manipulate the valve 19 in order to pressurize the con-.. All that is required is to connect the tubular arm 7 to a charging cartridge or other source of high pressure'.v gas and thus fill the connected passages 6a and 6 with. said gas, and the gas pressure in the passage 6 will auto? tainer.

matically open the valve 19 thus allowing the high pressure gas to ow into the container chamber 3.

For dispensing the contents of the pressurized container the valve stem 11 is mounted so that it and the valve element 19 can be moved lengthwise of the passage 14 from the closed position of the valve 19 shown in FIG. 2 into an open position shown in FIG. 4, in which position said valve is located within the chamber 3 and below the bottom face 12 of the cap 4. The portion of the valve stem 11 immediately above the ring valve 19 is attened on the side facing the the place 13 where the two passages 6 and 14 merge as shown at 31, and when said ring valve is in its lowered open position as shown in FIG. 4 the attened portion 31 is located to provide an enlarged dispensing opening 32 from the chamber 3 directly into the passage 6 through which the contents of the container 1 can be dispensed.

The upper end of the valve stem 11 is reduced in diameter as shown at 24 in FIG. 1 and said portion 24 of the valve stem extends through a bushing 25 which is screw threaded into the top face of the cap 4 and is screw threaded into the lower end of a knob or finger piece 28 by which the valve stem can be adjusted to open or close the two way valve. The lower end 29 of the nger piece 28 has a reduced diameter and extends into an open topped chamber 26 with which the bushing 25 is provided. If desired, a spring 27 may be placed in said chamber 26 between the bottom of the chamber 26 and the lower end of the portion 29 of the knob 28 which will apply a constant lifting force on the valve stem 11, tending to close the valve. The upward movement of the valve stem is limited by the shoulder 30 thereon coming into engagement with the bottom of the bushing 25.

The spring 27 normally tends to hold the valve element 19 in its closed position shown in FIGS. 1 and 2, but pressure applied to the knob 28 will force the valve stern downwardly from the position shown in said FIGS. l and 2 into a lowered position shown in FIG. 4, in which position the sealing ring valve 19 is located in an open position entirely below the bottom face 12 of the cap 4 as shown in FIG. 4. It will be understood that the sealing ring 18 maintains a continuous leakproofseal between Y ment secured to the body and closing said chamber, said cap element having a combined charging and dispensing passage therethrough, one end of said passage open to said chamber, a combined loading and dispensing valve normally closing said passage at said one end thereof, said valve comprising a valve stem, one end of which extends through the said one end of said passage and into said chamber, said valve stem having a sealing ring valve element mounted 4thereon which seals said one end ofthe passage against pressure within the container, a portion of said 'sealing ring valve being unsupported against pressure in said passage which is greaterl than that in the container, 'whereby when gas under the greater pressure is admitted to said passage, the pressure of said gas against the unsupported portion of the sealing ring valve will displace said portion downwardly thereby opening a passage for 'the gas 'of greater pressure to enter the container.

2. A pressurized container and dispenser comprising a container body having an interior chamber, a cap element secured to the body and closing said chamber, said cap element having a combined rcharging and dispensing passage therethrough, one end of said passage open to said chamber, a combined loading and dispensing valve normallyY closing said passage at said end thereof, said valve comprising a valve stem, one end of which extends through the said one end of said passage and into said chamber, va sealing ring valve encircng said valve stern at said one end of said passage, means to retain said sealing ring valve on said valve stem to normally seal said passage, the portion of said valve stem below said sealing ring being cut away on one side so that the portion of said sealing ring valve corresponding to said cut away portion of said valve stem is unsupported on its underside, whereby when high pressure gas is Ifed into said charging passage for pressurizing the container, the pressure of said gas against the unsupported portion of the sealing ring valve forces such portion out of the end of said passage thus allowing said gas to ow into the chamber.

3. A pressurized container and dispenser comprising a container body having an interior chamber, a cap element secured to the body and closing said chamber, said .cap element having a combined charging and dispensing passage therethrough, one end of said passage open -to said chamber, a combined loading and dispensing valve normally closing said passage at said one end thereof, said valve comprising a valve stem one end of which extends through the said one end of said passage and into said chamber, a sealing ring valve encircling said valve stem at said one end of said passage and normally sealing said passage, the portion of said valve stem below said sealing ring being cut away on one side so that the portion of said sealing ring valve corresponding to said cut away portion of said valve stern is unsupported on its under side, a circumferencial .groove in said Valve ystem in which said sealing ring valve is mounted, and the cut away side of said valve stem end portion extends for a distance from said groove toward the end of said valve stem, whereby.

when high pressure gas is fed into said charging passage for pressurizing the container, the pressure of said gas against the unsupported portion of the sealing ring valve `forces such portion out of the end of saidY passage thus allowing said gas to flow into the chamber.

4. A pressurized container and vdispenser as defined in claim` 3 which is provided with means to move the valve stem and said sealing ring valve downwardly to carry said valve out of the lower end of said passage thereby opening said passage for the dispensing of the contents of said container.

5. A pressurized container and dispenser as dened in claim 3 which is provided with means to move the valve stem and said sealing ring valve downwardly to carry said valve out of the lower end of saidpassage and in which the portion of the valve stem immediately above said sealing ring valve has a reduced cross-sectional area wherebyV when said valve is in its lowered position said portion of the Valve stem having the reduced cross-sectional area` provides an enlarged dispensing opening through which the contents 'of the container can be dispensed.

References Cited in the le of this patent Y UNITED STATES vPATENTS 

